Home / 2,947.66-4,067.86-1,621.45

Finding the Fourth Proportional to 2,947.66, 4,067.86 and 1,621.45

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Solution

The fourth proportional to 2,947.66, 4,067.86 and 1,621.45 is: 2,237.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.66 : 4,067.86 = 1,621.45 : x
  2. Step 2: Convert to fraction form
    2,947.66/4,067.86 = 1,621.45/x
  3. Step 3: Cross multiply
    2,947.66x = 4,067.86 × 1,621.45
  4. Step 4: Simplify right side
    2,947.66x = 6,595,817.37
  5. Step 5: Solve for x
    x = 6,595,817.37/2,947.66
  6. Step 6: Final answer
    x = 2,237.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.